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<pre><span class="sourceLineNo">001</span>package calibration_demos;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.awt.Color;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import java.awt.geom.Point2D;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.util.ArrayList;<a name="line.5"></a>
<span class="sourceLineNo">006</span>import java.util.List;<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>import ij.IJ;<a name="line.8"></a>
<span class="sourceLineNo">009</span>import ij.ImagePlus;<a name="line.9"></a>
<span class="sourceLineNo">010</span>import ij.gui.Line;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import ij.gui.OvalRoi;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import ij.gui.Overlay;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import ij.gui.Roi;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import ij.plugin.PlugIn;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import imagingbook.calibration.zhang.Camera;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import imagingbook.calibration.zhang.ViewTransform;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import imagingbook.calibration.zhang.testdata.ZhangData;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import imagingbook.lib.ij.IjLogStream;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import imagingbook.lib.settings.PrintPrecision;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import imagingbook.lib.util.ResourceUtils;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>/**<a name="line.23"></a>
<span class="sourceLineNo">024</span> * This plugin projects opens an image stack containing the 5 Zhang<a name="line.24"></a>
<span class="sourceLineNo">025</span> * test images, then outlines the positions of the observed image <a name="line.25"></a>
<span class="sourceLineNo">026</span> * points and finally projects the points of the calibration model<a name="line.26"></a>
<span class="sourceLineNo">027</span> * using the calculated intrinsic camera parameters (same for all<a name="line.27"></a>
<span class="sourceLineNo">028</span> * views) and the extrinsic parameters calculated for each view.<a name="line.28"></a>
<span class="sourceLineNo">029</span> * All data are part of Zhang's demo data set that comes with the<a name="line.29"></a>
<span class="sourceLineNo">030</span> * EasyCalib program. NO CALIBRATION is performed here!<a name="line.30"></a>
<span class="sourceLineNo">031</span> * <a name="line.31"></a>
<span class="sourceLineNo">032</span> * Graphic elements are drawn as non-destructive vector overlays:<a name="line.32"></a>
<span class="sourceLineNo">033</span> * BLUE circles: observed corner points (used for calibration).<a name="line.33"></a>
<span class="sourceLineNo">034</span> * RED markers: projected model points (to validate parameters).<a name="line.34"></a>
<span class="sourceLineNo">035</span> * - LOOK CLOSELY / ZOOM IN! <a name="line.35"></a>
<span class="sourceLineNo">036</span> * The complete stack with overlay can be saved as a TIFF file. <a name="line.36"></a>
<span class="sourceLineNo">037</span> * <a name="line.37"></a>
<span class="sourceLineNo">038</span> * @author W. Burger<a name="line.38"></a>
<span class="sourceLineNo">039</span> * @version 2017-05-30<a name="line.39"></a>
<span class="sourceLineNo">040</span> */<a name="line.40"></a>
<span class="sourceLineNo">041</span>public class Demo_Zhang_Projection_Overlay implements PlugIn {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        <a name="line.42"></a>
<span class="sourceLineNo">043</span>        static Class&lt;?&gt; resourceRootClass = ZhangData.class;<a name="line.43"></a>
<span class="sourceLineNo">044</span>        static String resourceDir = "resources/";<a name="line.44"></a>
<span class="sourceLineNo">045</span>        static String resourceName = "CalibImageStack.tif";<a name="line.45"></a>
<span class="sourceLineNo">046</span>        <a name="line.46"></a>
<span class="sourceLineNo">047</span>        static double CircleRadius = 1.0;<a name="line.47"></a>
<span class="sourceLineNo">048</span>        static double CrossRadius  = 2.0;<a name="line.48"></a>
<span class="sourceLineNo">049</span>        static Color CircleColor = Color.blue;<a name="line.49"></a>
<span class="sourceLineNo">050</span>        static Color CrossColor = Color.red;<a name="line.50"></a>
<span class="sourceLineNo">051</span>        static double StrokeWidth  = 0.25;<a name="line.51"></a>
<span class="sourceLineNo">052</span>        <a name="line.52"></a>
<span class="sourceLineNo">053</span>        static boolean BeVerbose = false;<a name="line.53"></a>
<span class="sourceLineNo">054</span>        <a name="line.54"></a>
<span class="sourceLineNo">055</span>        static {<a name="line.55"></a>
<span class="sourceLineNo">056</span>                IjLogStream.redirectSystem();<a name="line.56"></a>
<span class="sourceLineNo">057</span>                PrintPrecision.set(6);<a name="line.57"></a>
<span class="sourceLineNo">058</span>        }<a name="line.58"></a>
<span class="sourceLineNo">059</span>        <a name="line.59"></a>
<span class="sourceLineNo">060</span>        public void run(String arg0) {<a name="line.60"></a>
<span class="sourceLineNo">061</span>                ImagePlus testIm = ResourceUtils.openImageFromResource(resourceRootClass, resourceDir, resourceName);<a name="line.61"></a>
<span class="sourceLineNo">062</span>                if (testIm == null) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>                        IJ.error("Could not open calibration images!"); <a name="line.63"></a>
<span class="sourceLineNo">064</span>                        return;<a name="line.64"></a>
<span class="sourceLineNo">065</span>                }<a name="line.65"></a>
<span class="sourceLineNo">066</span>                <a name="line.66"></a>
<span class="sourceLineNo">067</span>                int M = testIm.getNSlices();<a name="line.67"></a>
<span class="sourceLineNo">068</span>                Overlay oly = new Overlay();<a name="line.68"></a>
<span class="sourceLineNo">069</span>                <a name="line.69"></a>
<span class="sourceLineNo">070</span>                // plot the observed image points as circles:<a name="line.70"></a>
<span class="sourceLineNo">071</span>                Point2D[][] obsPoints = ZhangData.getAllObservedPoints();<a name="line.71"></a>
<span class="sourceLineNo">072</span>                for (int i = 0; i &lt; obsPoints.length; i++) {<a name="line.72"></a>
<span class="sourceLineNo">073</span>                        int sliceNo = i + 1;<a name="line.73"></a>
<span class="sourceLineNo">074</span>                        for (Roi roi : makeCircleRois(obsPoints[i], CircleColor)) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>                                roi.setPosition(sliceNo);       // associate overly with this slice (important)<a name="line.75"></a>
<span class="sourceLineNo">076</span>                                oly.add(roi);<a name="line.76"></a>
<span class="sourceLineNo">077</span>                        }<a name="line.77"></a>
<span class="sourceLineNo">078</span>                }<a name="line.78"></a>
<span class="sourceLineNo">079</span>                <a name="line.79"></a>
<span class="sourceLineNo">080</span>                // plot the projected model points as crosses:<a name="line.80"></a>
<span class="sourceLineNo">081</span>                Point2D[] modelPoints = ZhangData.getModelPoints();<a name="line.81"></a>
<span class="sourceLineNo">082</span>                Camera camReal = ZhangData.getCameraIntrinsics();<a name="line.82"></a>
<span class="sourceLineNo">083</span>                ViewTransform[] viewsReal = ZhangData.getAllViewTransforms();<a name="line.83"></a>
<span class="sourceLineNo">084</span>                <a name="line.84"></a>
<span class="sourceLineNo">085</span>                for (int i = 0; i &lt; M; i++) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>                        int sliceNo = i + 1;<a name="line.86"></a>
<span class="sourceLineNo">087</span>                        Point2D[] projPnts = camReal.project(viewsReal[i], modelPoints);<a name="line.87"></a>
<span class="sourceLineNo">088</span>                        for (Roi roi : makeCrossRois(projPnts, CrossColor)) {<a name="line.88"></a>
<span class="sourceLineNo">089</span>                                roi.setPosition(sliceNo);       // associate overly with this slice (important)<a name="line.89"></a>
<span class="sourceLineNo">090</span>                                oly.add(roi);<a name="line.90"></a>
<span class="sourceLineNo">091</span>                        }<a name="line.91"></a>
<span class="sourceLineNo">092</span>                }<a name="line.92"></a>
<span class="sourceLineNo">093</span>                <a name="line.93"></a>
<span class="sourceLineNo">094</span>                testIm.setOverlay(oly);<a name="line.94"></a>
<span class="sourceLineNo">095</span>                testIm.show();  <a name="line.95"></a>
<span class="sourceLineNo">096</span>        }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>        // ----------------------------------------------------------------------<a name="line.98"></a>
<span class="sourceLineNo">099</span>        <a name="line.99"></a>
<span class="sourceLineNo">100</span>        List&lt;Roi&gt; makeCrossRois(Point2D[] pnts, Color lineCol) {<a name="line.100"></a>
<span class="sourceLineNo">101</span>                final double r = CrossRadius;<a name="line.101"></a>
<span class="sourceLineNo">102</span>                final double ofs = 0.5; // pixel offset (elements to be placed at pixel centers)<a name="line.102"></a>
<span class="sourceLineNo">103</span>                List&lt;Roi&gt; rois = new ArrayList&lt;Roi&gt;();<a name="line.103"></a>
<span class="sourceLineNo">104</span>                for (int j = 0; j &lt; pnts.length; j++) {<a name="line.104"></a>
<span class="sourceLineNo">105</span>                        double x = pnts[j].getX();<a name="line.105"></a>
<span class="sourceLineNo">106</span>                        double y = pnts[j].getY();<a name="line.106"></a>
<span class="sourceLineNo">107</span>                        Line linX = new Line(x - r + ofs, y + ofs, x + r + ofs, y + ofs);<a name="line.107"></a>
<span class="sourceLineNo">108</span>                        Line linY = new Line(x + ofs, y - r + ofs, x + ofs, y + r + ofs);<a name="line.108"></a>
<span class="sourceLineNo">109</span>                        linX.setStrokeColor(lineCol);<a name="line.109"></a>
<span class="sourceLineNo">110</span>                        linY.setStrokeColor(lineCol);<a name="line.110"></a>
<span class="sourceLineNo">111</span>                        linX.setStrokeWidth(StrokeWidth);<a name="line.111"></a>
<span class="sourceLineNo">112</span>                        linY.setStrokeWidth(StrokeWidth);<a name="line.112"></a>
<span class="sourceLineNo">113</span>                        rois.add(linX);<a name="line.113"></a>
<span class="sourceLineNo">114</span>                        rois.add(linY);<a name="line.114"></a>
<span class="sourceLineNo">115</span>                }<a name="line.115"></a>
<span class="sourceLineNo">116</span>                return rois;<a name="line.116"></a>
<span class="sourceLineNo">117</span>        }<a name="line.117"></a>
<span class="sourceLineNo">118</span>        <a name="line.118"></a>
<span class="sourceLineNo">119</span>        List&lt;Roi&gt; makeCircleRois(Point2D[] pnts, Color lineCol) {<a name="line.119"></a>
<span class="sourceLineNo">120</span>                final double r = CircleRadius;<a name="line.120"></a>
<span class="sourceLineNo">121</span>                final double ofs = 0.5; // pixel offset (elements to be placed at pixel centers)<a name="line.121"></a>
<span class="sourceLineNo">122</span>                List&lt;Roi&gt; rois = new ArrayList&lt;Roi&gt;();<a name="line.122"></a>
<span class="sourceLineNo">123</span>                for (int j = 0; j &lt; pnts.length; j++) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>                        double x = pnts[j].getX();<a name="line.124"></a>
<span class="sourceLineNo">125</span>                        double y = pnts[j].getY();<a name="line.125"></a>
<span class="sourceLineNo">126</span>                        OvalRoi circle = new OvalRoi(x - r + ofs, y - r + ofs, 2 * r, 2 * r) ;<a name="line.126"></a>
<span class="sourceLineNo">127</span>                        circle.setStrokeColor(lineCol);<a name="line.127"></a>
<span class="sourceLineNo">128</span>                        circle.setStrokeWidth(StrokeWidth);<a name="line.128"></a>
<span class="sourceLineNo">129</span>                        rois.add(circle);<a name="line.129"></a>
<span class="sourceLineNo">130</span>                }<a name="line.130"></a>
<span class="sourceLineNo">131</span>                return rois;<a name="line.131"></a>
<span class="sourceLineNo">132</span>        }<a name="line.132"></a>
<span class="sourceLineNo">133</span>        <a name="line.133"></a>
<span class="sourceLineNo">134</span>}<a name="line.134"></a>




























































</pre>
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